Molecular and functional analysis of a lymphocyte chemoattractant factor: association of biologic function with CD4 expression.

Cruikshank, W W; Center, D M; Nisar, N; Wu, M; Natke, B; Theodore, A C; Kornfeld, H · Proc Natl Acad Sci U S A · 1994

basic_science · Level V

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Abstract

Lymphocyte chemoattractant factor (LCF) is a lymphocyte cell product that stimulates a migratory response in CD4+ lymphocytes, monocytes, and eosinophils. In concert with its chemoattractant activity, LCF induces human T-lymphocyte expression of interleukin 2 receptor. Here we describe the molecular cloning of cDNA encoding human LCF. It is a novel interleukin with no significant homology to any previously described cytokine families. There is an absolute requirement for both autoaggregation of LCF monomers and for membrane-expressed CD4 molecules for LCF-induced migration in lymphocytes.

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